Engine cross-head.



No. 692,288. Patented Feb. 4, |902.

F. b. HnLnswonTH.

ENGINE CROSS HEAD.

(Application filed Apr. 9, 1901,.) (N o M o d e l I nvenor.

Winesses v l UNTTnn STATES PATENT OFFICE.

FRED DEAN HOLDSWORTH, OF CLAREMONT, NE\V HAMPSHIRE, ASSIGNOR TO SULLIVANMACHINERY COMPANY, OF CLAREMONT, NEW HAMPSHIRE, AND CHICAGO, ILLINOIS, ACORPORATION OF NEV HAMPSHIRE.

ENGINE CROSS-HEAD.

SPECIFICATION forming' part of Letters Patent No. 692,288, datedFebruary f1, 1902. Application filed April 9,1901. Serial No. 54,980.(No model.)

To @ZZ whom, it may concern: y y bolt 13, which extends verticallythrough the 5o Be it known that I, FRED DEAN HOLDS- ,crosshead,as shown.vThis swivelpin or bolt WORTH,aresident of Claremont,in the county 13 inthe modification shown in Fig. 3 is proof Sullivan and State ofNewHampshire, have vided with a head 14 on its upper end and 5 inventeda new and useful Improvement in with a threaded portion l5 at its lowerend,

Engine Cross-Heads; and I do hereby declare which receives the nut 16. Aseries of liners 55 the following to be a full, clear, and exact deorshims 17 are placed between the head of scription thereof. said bolt andthe upper plate Lt of the cross- My invention relates to enginecross-heads, head. As the parts wear one or more of these io and moreparticularly to cross-heads which shims will be removed and the bolt 12drawn have wrist-pins at both ends for the attachdown by means of thenut 16, wherebyits ta- 6o ment of connecting-rods thereto and whichpered portion 12 will expand the split sleeve cross-heads have a swivelconnection with a 10, so that the latter will snugly fit the cylinpistonrod or rods in order to relieve the latdrical opening in the block 7.I-5 ter from bending strain, due to inequalities In the preferred form(shown in Fig. 2) the in the lengths of the connecting-rods, lack pin orbolt 13 is provided with a screw exten- 65 of alinement of theengine-shaft, or to other sion 18 on its upper end, which receives thecauses. nut 19, and in order to take up the wear in The object of myinvention is to provide a this construction the nut 19 is loosened and2o connection between the piston-rod and crossthe nut 16 tightened up,thereby drawing said head which is so constructed as to permit ofswivel-bolt downward and expanding thesplit 7o taking up the wear ofthese parts. sleeve 10, as will be readily understood.

In the accompanying drawings, Figure 1 is In the operation of an enginewith my imaplan view of myimproved cross-head. Fig. proved crosshead ifthe connecting-rods 25 2 is a transverse section through the centershould be of unequal length or the shaft of of the same, and Fig. is asimilar view of a the engine out of alinement the cross-head 1 75modification thereof. Awill have a slight rocking or swinging move- Inthe accompanying drawings, 1 represents ment about the pin 13 as anaxis. This pin, the cross-head, which is provided on both ends togetherwith the sleeve 10, is secured to the 3o with wrist-pins 2 for receivingthe usual concross-head so that they will rotate or swing necting-rodsleading to the shaft of the enin unison with said cross-head, and anywear 8o gine', said crosshead being also provided with that takes placewill take place between the the guide-faces 3, which move on the ways ofsleeve lO and the opening in the block 7. This the engine-bed in theordinary manner. The rotating movement of the cross-head will pre- 35body of the cross-head is cut away centrally vent any bending strainbeing brought on the to provide the upper wall or plate 4 and lowerpiston-rods 8 and 9, as will be readily under- 85 wall or plate 5, witha space 6 between the stood. rlhe sleeve 10 and pin 13 can be made same.In this space centrally of the crossto fit so tightly that they willmove in unison head is located the swivel-block 7, to which with thecrosshead, and generally when the 4o swivel-block are attached thepiston-rods 8 nuts 1G and 1) are set up tightly the sleeve and 9, saidrods being shown as screwedinto 10 is clamped between the upper plate 4and 9o the swivel-block; but it is obvious that any lower plate 5 of thecross-head, so that said other suitable means can be used `for securingsleeve, together with the bolt 1,3, swings in said rods to the block.The block 7 is prounison with the cross -head and the only 45 vided witha central cylindrical hole,in which swivel movement will be between thesleeve is located the sleeve or bushing 10, this sleeve 10 and the block7. IE necessary, any suit- 95 or bushing being split, as at 11, andhaving able means, such as keys or set-screws, may aconical or taperingbore, as shown, in which be used to lock the bolt 13 and sleeve 10 tofit-s a tapered portion 12 on the swivel pin or the cross-head. Aconvenient way of securing this result is by providing the cross-headwith a lug, which takes into the slit 11 of the sleeve 10.

It will thus be seen that I have provided a cross-head in which bendingstrains due to inequalities in the lengths of the connectingrods or lackof alinement of the engine-shaft cannot be communicated to thepiston-rods and that any Wear that may occur in the parts can be readilytaken up. While I have shown two piston-rods 8 and 9 connected to theblock 7, I wish it understood that my invention is not limited thereto,but is equally applicable to a single piston-rod connected to saidblock.

What I claim as my invention, and desire to secure by Letters Patent, is

1. An engine cross-head provided with Wrist-pins at the ends for theattachment of connecting-rods thereto,.of a block provided with acylindrical opening, a split sleeve littng in said opening, and aswivel-pin passing through said sleeve and secured to the cross-head toswing therewith, said block being provided with means for the attachmentof a piston-rod thereto.

2. An engine cross-head provided with wrist-pins at the ends for theattachment of connecting-rods thereto, of a block provided with acylindrical opening, a split sleeve therein, said sleeve having atapered opening, and a swivel-pin having a tapered portion passingthrough said sleeve and secured to the crosshead to swing therewith.

3. An engine cross-head provided with wrist-pins at the ends for theattachment of connecting-rods thereto, of a block provided with anopening and with means for the attachment of the piston-rod thereto, ofa split sleeve in the opening in said block and provided with a taperedopening, and a pin having a tapered portion passing through said sleeveand secured to the cross-head, the construction being such that said pinand sleeve will move in unison with the cross-head.

4. An engine cross-head provided with Wrist-pins at the ends for theattachment of connecting-rods thereto, of a block provided with acylindrical hole through the center thereof and with means for theattachment of the pistonrod thereto, of a split sleeve in said opening,said sleeve having a tapered bore,va swivel-pin having a tapered portionpassing through said sleeve, said pin having screw-threaded portions atbot-h ends, and nuts fitting thereon and bearing on the upper and lowerfaces of the cross-head.

In testimony whereofl, the said FRED DEAN HOLDSWORTH, have hereunto setmy hand.

FRED DEAN HOLDSVVORTH.

